Building gcc cross compiler without libc

This evening the process of cross compiling the latest source of gcc failed, because the build systems automatically decided to build fancy stuff which required a working C library (maybe only headers, I don’t care). I couldn’t provide a C library and I wasn’t willing to, because I just don’t need one for my setup.

The workaround is quite easy: Instead of making the default “all” target, I only built “all-gcc” and “all-target-libgcc”. To install the built targets, make “install-gcc” and “install-target-libgcc”. Easy, isn’t it? :)

Example:

$ ./configure --target="$TARGET" --prefix=/tmp/cross --disable-shared --disable-nls --enable-languages=c
[...]
$ make all-gcc all-target-libgcc
[...]
$ make install-gcc install-target-libgcc

binutils: 2.21; gcc: 4.6.1